Structural aberration of the X chromosome in a patient with gonadal dysgenesis: an approach to karyotype-phenotype correlation.

Abstract
An 18 yr old female with some stigmata of pure gonadal dysgenesis had a chromosome constitution of 46,X,dir dup(X) (pter .fwdarw. q27: :q21 .fwdarw. qter). The abnormal chromosome was always late replicating. The clinical and cytogenetic picture is compared with that of patients with X;X translocation and some problems of karyotype-phenotype correlation are discussed.